body {
  background: url("../images/bg.jpg") no-repeat;
  background-size: cover;
  background-position: left top;
}
.wrap {
  width: 100%;
  height: auto;
}
header,
section,
footer {
  width: 100%;
  height: auto;
}
.common-content,
.content {
  margin: 20vh auto;
  padding: 0;
  background: rgba(255,255,255,0.6);
  box-shadow: 0 0 15px #b7b7b7;
}
@media (min-width: 0) and (max-width: 767px) {
  .content {
    width: 100vw;
    height: 60vh;
  }
}
@media (min-width: 768px) {
  .content {
    width: 60vw;
    height: 60vh;
  }
}
.content form {
  margin: 0 auto;
  padding: 12vh 0;
  box-sizing: border-box;
  width: 80%;
  height: 60vh;
}
.line {
  margin: 0 auto;
  width: 80%;
  height: 9vh;
  line-height: 9vh;
  font-size: 0;
}
input[type='text'],
input[type='password'] {
  width: 70%;
  height: 6vh;
  line-height: 6vh;
  padding: 0 1vh;
  box-sizing: border-box;
  font-size: 1rem;
  border: none;
  background: none;
  border-bottom: 1px solid rgba(255,255,255,0.4);
  outline: none;
}
.line-col {
  display: inline-block;
}
.line .line-col:nth-child(1) {
  width: 35%;
  text-align: right;
  font-size: 1rem;
  color: #525247;
}
.line .line-col:nth-child(2) {
  width: 65%;
  text-align: left;
}
.submit {
  height: 6vh;
  line-height: 6vh;
  padding: 0 1vh;
  box-sizing: border-box;
  font-size: 1rem;
  width: 30%;
  background: #666;
  border: 0;
  color: #fff;
}
.submit:hover {
  opacity: 0.8;
}
.submit:active {
  opacity: 1;
}
